Car construction.



H. M. PPLAGBR. GAR CONSTRUCTION.

APPLIOATIONIILED y13110.16, 1910.

Patented Allg- 1, 1911.

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CAR CONSTRUCTION. APPLIOATION FILED 1320.16, 1910.

Patented Aug. 1, 1911.

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sra'rns CAR CONSTRUCTION.

Specification of Letters Patent.

Patented and. '1, 1911.

Application led'lDecember 16, 1910. Serial No. 597,669.

To all whom 'it may' concern. l Be it known that I, HARRY M. PFLAGER, acitizen of the United Sta-tes, residing at St. Louis, Missouri, haveinvented a certain new and useful Improvement in Car Construcvtion, ofwhich the following is a full, clear, and exact description', such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, formingpart of this specification, in which- Figure l is atop plan view of apart of the -underframe of my improved car construction. F ig. 2 is aside elevation of my improved car construction, with parts thereof invertical section. Fig. 3 is an enlarged cross section taken on the line3-3 of Fig. 2. Fig. 4 is a side elevation, p-artly in secl tion, of a"modified form of my improved 20 I construction. l This invention relatesgenerally to car construction, and more particularly tothe car wheelsand axles and the means for mounting the same beneath the ends of theunderframe or car body.

The principal objects of my invention are to construct a car whereinvthe expensive, heavy, swiveled trucks are done away with, therebymaterially reducing the first cost of building the car, the cost ofmaintenance and the dead weight of the car, and further, to produce acar that will readily traverse short curves and pass over switches andcrossings Without creating undue friction between the flanges of the carwheels and the track rails.v

A further object of my invention is t-o arrange two pairs of wheelsbeneath each end of theT car body and to' locate the wheels of each pairvery close to one another, thereby producing an extremely narrow wheelbase, one pair I'of which Wheels is devoid of the usual flanges in orderto entirely obviate all resistance) and consequent friction while thecar'is traversing a sharp curve.

To the above purposes, my invention consists in certain novel featuresof construction and arrangement of parts hereinafter more fullydescribed and claimed.

Referring by numerals to the accompanying drawings, 1 designates theside sills of a l car underframe, 2 the intermediate sills, 3' the crossbearers, 4 the body bolster, and 5 the draw bar, all of these partsbeing of ordinary construction.

6 designate pedestals arranged in pairs,

short side frame formed by the pairs of pedestals. The ends of the caraxles 10 are Journaled in the boxes 7 in the' usual manner, and carriedby the inner one of the car axles -isa pair of ordinary flanged carwheels 11.

The wheels l2 carried by the outer axle are devoid of the usual flanges,and thus when -a car of my improved construction is traversing a shortcurve, the inner pair of wheels at each end act as pivots for the endsof the car-while the outer pair of wheels, which are bald 'or iangeless,shift laterally upon the balls of the'track rails without developingresistance or friction. The outer wheels could, however, be flanged andthe inner wheels ina'de flangeless, if desired, the result beingsubstantially the same.

In Fig. 4 I have shown the pedestals. formed in pairs and each pair isindividually fixed to the under side of the underframe. In allinstances, the pairs of pedestals are arranged as closely together as'is practicable so as to shorten up the wheel base or the distance fromcenter to center of the axles. By utilizing avpair of wheels withoutflanges on the outer axles, the car can traverse curves having anextremely short radius, and the only friction or resistance de velopedbetween the wheels of the trucks andthe track rails occurs between theflanged pair of wheels which are 'acting asv pivots for the ends of thecar.

By my improved construction, a considerable saving effected in the firstcost ofY building cars and in repairs thereto, inasmuch as a largenumber of parts which are essential in swiveled truck construction are`entirely done away with. A very Strong and there are no side bearingsrequired. The

l danger' of derailment of Wheels of my improved construction intraversing curves is small as compared to ordinary swiveled truckshaving long wheel bases, for where cars are equipped with swiveledtrucks of ordinary 'construction and the car is taking -a short curve,derailment is practically a 'existing in this country, Where it isdesirable to carry great loads and bulk in cars, and it is stilldesirable to further increase the car- 'rying capacity of the cars.

It will be readily understood that minor changes may be made in theconstruction, arrangement and combination of the various parts of myimproved car construction, without departing from the nature andprinciple of my invention.

I/ claim:

1. In car construction, the combination with an underframe, of two pairsof Wheels under each end of the car, t-he wheels at each end beingarranged closely together and having 'narrow wheel bases, which wheelsare so-mounted as to be horizontally immovable with respect to the underframe, the

` outer pair of each set of wheels being devoid of flanges.

2. In car construction, the combination with an underframe, of two pairsof wheels arranged under each end of the car, the outer pair of each setof wheels being devoid of flanges.

flanged Wheels `on the inner axlel of each Y pair, and flangeless wheelson the outer axle.

of each pair.

4. In car construction, the combination with an underframe, of shortside frames rigidly fixed to and de ending from the under side ftheunder ame at each end thereof, journal boxes yieldingly arranged in theside frames, apair of axles having their ends journaled in the boxes, apair of flanged wheels on one of the axles of each pair, and a pair offlangeless wheels on the other axle of each pair.

'- 5. In car construction, the combination of an under frame, side,truck frames rigidly fastened thereto, each of said side truck frameshaving two journal box openings, journal boxes guided vertically in saldopenings and semi-elliptic leaf springs bearing at their centers againstthe under frame and at each end upon the journal boxes.

6. In car construction the combination of an underframe, two pairs ofjournal box guides rigidly fastened thereto at each end of the car andproviding transversely alined journal box openings, journal boxes guidedvertically in said openings, and semielliptic leaf springs bearing attheir centers against the underframe and at each end on said journalboxes.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses, thi's 14th day of December, 1910. HARRY M. PFLAGER.

Witnesses:

M. P. SMITH, B. S. REID.

